Suction pump means having opposite suction tubes with transversal and peripheral openings



July 7, 1964 3,139,838 BES G. S. MITTELSTAEDT SUCTION PUMP MEANS HAVING OPPOSITE SUCTION TU WITH TRANSVERSAL AND PERIPHERAL OPENINGS Filed Feb. 26, 1962 FIG.

FIG. 2

R m m V m FIG. 3

United States Patent 3,139,838 SUCTION PUMP MEANS HAVING OPPOSITE SUCTION TUBES WITH TRANSVERSAL AND PERIPHERAL OPENINGS Georg S. Mittelstaedt, 274 73rd St., Brooklyn, NY. Filed Feb. 26, 1962, Ser. No. 175,453 11 Claims. (Cl. 103-262) This invention relates to suction means, including suction pumps, and relates particularly to the specific construction of the suction device, that is, the conduit or flow tube and the suction tube associated therewith. The device is capable of independent use, separate and apart from any specific use or any specific source of fluid through the conduit, and may be used wherever suction devices are employed. For instance, the suction device may be used in connection with jet engines and other internal combustion devices, it may be used in combination with any intake or exhaust means, with spray, draining, and draft devices, with aeration devices and other combining devices, to drive turbines or other apparatus, and wherever suction flow is utilized.

Objects of this invention are: to provide a suction pump in connection with fluid fiow, to increase the efficiency of suction devices, to improve suction tubes, to improve suction pumps, to produce suction flow, to augment suction flow, to augment flow in the conduit downstream of the suction pump, to increase the efiective total momentum of fluid, to increase the effective total momentum of fluid discharged in unit time, to increase thrust, to increase power, to utilize the suction flow to secure a cooling effect, to drive a turbine, to provide a cool running turbine, simplicity of construction, installation, and maintenance, and low cost.

These and other objects will become apparent in the description below, in which characters of reference refer to like-named parts in the drawing.

The drawing shows sectional views illustrating the in vention, but the invention is not limited to the particular examples illustrated.

FIGURE 1 is a longitudinal sectional view of a conduit; opposite, open-ended suction tubes with transversal openings extending partly across the conduit, and partition means separating the suction tubes, showing an embodiment of this invention.

FIGURE 2 is similar to FIGURE 1, but the suction tubes have transversal and peripheral openings, and separate channels lead from the peripheral openings to the outer ends of the suction tubes.

FIGURE 3 is a transverse sectional view of the device taken on the line 3-3 of FIGURE 2.

Referring in detail to the drawing, the numeral indicates a conduit or flow tube, and 11 indicates a first open-ended suction tube with a transversal suction opening 12. The suction tube extends partly across the flow tube at right angles to the axis thereof. The transversal opening 12 is shaped in a slant, the side of the suction tube toward the flow extending'further into the flow tube than the side opposite the flow. A second suction tube 13 extends partly across the flow tube opposite suction tube 11, also at right angles to the axis of the flow tube. The tube 13 is a counterpart to tube 11, and the numeral 14 indicates a slanted transverse opening. Together, the suction tubes extend about three quarters or more across the flow tube. The numeral 16 indicates a barrier or wall between the slanted ends of the suction tubes, at right angles to the axes thereof. The wall 16 is a preferably flat body separating the suction tubes; it extends to the peripheral lines of the suction tubes, or beyond. Increase of extension increases the suction effect. In FIGURE 3 I indicate the barrier 16 extending to the peripheral wall of the flow tube. Flow tube and suction tubes are the ice straight line wall type. The numeral 15 indicates welds or other fastening means, and the arrows in the tubes indicate the direction of flow. A constriction of flow is produced about the suction tubes, resulting in a low pressure area, and air or other fluid is drawn through both suction tubes into the flow tube.

In FIGURE 2, the suction tubes 11 and 13 extend into the flow tube, and the partition 16 separates the suction tubes, as in FIGURE 1. The suction tubes diverge toward their diameters and then converge, and a constriction of flow is produced which increases to the diameters of the suction tubes, and then decreases; velocity increases and decreases in proportion to constriction of flow. Openings 19 and 20 are provided in the peripheral walls of the suction tubes. The openings preferably begin immediately downstream of the greatest constriction of flow, and extend toward the rear portion of the suction tube. The numerals 21 and 22 indicate tubes or channels leading from the peripheral openings to the outer ends of the suction tubes.

Since pressure is reduced accompanying increase of velocity, a low pressure area is produced, and air or other fluid is drawn through the defined transversal and peripheral openings of both suction tubes into the flow tube.

The size of the suction tubes to flow tube is an important feature for obtaining effective suction. An aggregate extension of the suction tubes about across the flow tube produces a high suction effect.

FIGURE 3 is a transverse view taken on the line 33 of FIGURE 2. Here again, the numeral 10 indicates the flow tube, 11 and 13 the suction tubes, 12 and 14 the transversal suction openings, and 19 and 21) the peripheral suction openings. The numerals 21 and 22 indicate the tubes or other channels leading from the peripheral openings to the outer ends of the suction tubes. The numeral 16 indicates the partition for separating the suction tubes, extending to the peripheral wall of the flow tube. The numeral 23 indicates welds or other fastening means.

The peripheral openings 19 and 29 may be formed by cutting away or otherwise eliminating suction tube structure downstream of the greatest constriction of flow. The suction tubes may also be cast or otherwise made with corresponding openings. The openings may be of any character, shape, or form, and in the text and claims, by opening is also meant plural openings, including slits, perforations, pores, or any other type opening.

The wall portions of the suction tubes toward the flow may be streamlined, or be equipped with fairings, and this is part of this invention.

The suction tubes may be fastened to the conduit by any suitable means such as welding, soldering, bolting, cementing, screwing etc; or a fitting may be made comprising a representative portion of the conduit and the described separated suction tubes extending thereinto, the fitting being inserted in the conduit or attached thereto by any suitable means. Such means include unions or other coupling means, cementing, soldering, welding, etc. The broken lines 17 and 18 in FIGURE 1 indicate the insertion of the fitting in the conduit.

Examples of practical applications of the invention are: (1) Drainage pumps, where the defined suction tubes communicate with useless water. (2) Aeration devices, where the defined suction tubes communicate with air or other gas. (3) Mixing devices, where the defined suction tubes communicate with selective mixing fluid. (4) Spray devices, where the suction means and a suitable nozzle are disposed at the end of the hose or conduit, and where the defined suction tubes communicate with fluid material used in the spray. (5) Exhaust aeration pumps for piston type combustion engines, where the device is inserted in the exhaust line or attached to the end of the tail pipe, and where the defined suction tubes communicate with air. (6) Suction pumps for jet engines, where the defined suction tubes may extend (a) across the air intake duct, (b) across the burner or ducted burner, preferably at a point where high velocity has been reached, across the exhaust tube of a combustion chamber, (d) across the exhaust nozzle. (7) Suction pump according to Example 6, where the suction tubes are connected with turbine means, the turbine means to compressor means, and where ducts are provided conveying the compressed air to the combustion chamber. Fuel means and perhaps ignition means may be provided in an optional manner.

I illustrate a conduit and suction tubes of the straight line wall type, and I show the suction tubes extending into the conduit at right angles to the axis thereof; but any other suitable type conduit or suction tubes, and any other type of extension or angular inclination may be employed.

Suction eflect augmenters may be used in connection with the suction tubes. The augmenters may comprise enlarged mouths at the outer end of the suction tubes.

In the text and claims, by tubes of the straight line wall type is meant this type at the aspiration point; by tube is also meant duct, channel, passage; by suction tube is meant any tube which conveys suction flow, also in part; by conduit or flow tube is also meant channel, duct, passage, ducted burner, exhaust tube, exhaust nozzle; by fluid is meant any substance which is capable of flowing, as a liquid, a gas, or readily movable solid; by upstream side or downstream side of the suction tube is meant in relation to flow through the flow tube; by spaced is also meant chiefly spaced.

The principles involved in this invention may be applied to all fields of fluid flow, as related to suction.

Changes in form and construction may be made without departing from the spirit or scope of the invention.

I claim:

1. Suction pump means comprising a flow tube of the straight line wall type, a flat body midway in the flow tube facing the tube wall, and opposite, open-ended suction tubes with slanted inner ends extending partly across the flow tube toward opposite sides of said flat body and terminating in spaced relation thereto, the upstream sides of the suction tubes as related to flow passage through the flow tube extending further into the How tube than the downstream sides.

2. In a device comprising a flow tube and a flat body disposed in the flow tube and facing the tube wall at a distance therefrom, diametrically opposed suction tubes with slanted inner ends extending partly across the flow tube toward opposite sides of said flat body and terminating in spaced relation thereto, the sides of the suction tubes opposing the flow passage through the flow tube extending further into the flow tube than the opposite sides.

3. In suction pump means comprising a flow tube and opposite suction tubes extending partly across the flow tube, the sides of the suction tubes opposing the flow passage through the flow tube extending further into the flow tube than the opposite sides, a wall disposed between the inner ends of the suction tubes at a distance therefrom.

4. In suction pump means comprising a flow tube of the straight line will type and diametrically opposed suction tubes with slanted inner ends extending partly across the flow tube, the entering edges of the suction tubes as related to flow passage through the flow tube extending further into the flow tube than the trailing edges, a wall disposed between the inner ends of the suction tubes, facing the ends transversally in spaced relation thereto.

5. In suction pump means comprising a flow tube and opposite suction tubes extending partly across the flow tube so that the upstream sides of the suction tubes extend further into the flow tube than the downstream sides, a

wall directly between the inner ends of the suction tubes and facing said ends transversally in spaced relation thereto.

6. In suction pump means comprising a flow tube and opposite suction tubes extending partly across the flow tube and producing increasing-decreasing constrictions of flow therein, the sides of the suction tubes upstream of the greatest constrictions of flow extending further into the flow tube than the opposite sides, a fiat body extending between the inner ends of the suction tubes in spaced relation thereto, the diameter of said flat body being at least equal to that of the suction tubes.

7. In suction pump means comprising a flow tube and opposite suction tubes with slanted inner ends extending partly across the flow tube, the entering edges of the suction tubes as related to flow passage through the flow tube extending further into the flow tube than the trailing edges, a flat body extending between the slanted inner ends of the suction tubes in spaced relation thereto, said flat body being greater in diameter than the suction tubes.

8. In suction pump means comprising a flow tube and diametrically opposed suction tubes extending partly across the flow tube, the sides of the suction tubes opposing the flow passage through the flow tube extending further into the flow tube than the opposite sides, a partition extending across the flow tube and facing the ends of the suction tubes transversely in spaced relation thereto.

9. Suction pump means comprising a flow tube, opposite suction tubes extending partly across the flow tube and producing increasing-decreasing constrictions 0f flow therein, the sides of the suction tubes upstream of the greatest constrictions of flow extending further into the flow tube than the opposie sides, transversal openings at the ends of the suction tubes, wall between the ends of the suction tubes in spaced relation thereto, peripheral openings, in the suction tubes downstream of the greatest constrictions of flow, and separate channels in the suction tubes leading from the peripheral openings to the outer ends of the suction tubes.

10. In suction pump means comprising a flow tube, opposite suction tubes extending partly across the flow tube, the upstream sides of the suction tubes as related to flow passage through the flow tube extending further into the flow tube than the downstream sides, transversal openings at the inner ends of the suction tubes, and peripheral openings in the suction tubes on the downstream sides thereof, a wall between the inner ends of the suction tubes in spaced relation thereto.

11. In suction pump means comprising a flow tube, suction tubes with slanted inner ends extending partly across the flow tube so that the upstream sides of the suction tubes extend further into the flow tube than the downstream sides, transversal openings in the suction tubes at said slanted inner ends, peripheral openings in the suction tubes on the downstream sides thereof, and partition means in the suction tubes forming separate tubes with the suction tubes leading from the peripheral openings at least to the outer ends of the suction tubes, a Wall between the slanted inner ends of the suction tubes in spaced relation thereto.

References Cited in the file of this patent UNITED STATES PATENTS 523,581 Klinger July 24, 1894 1,019,241 Frame Mar. 5, 1912 2,966,312 Wilson et al Dec. 27, 1960 2,993,639 Foster July 25, 1961 FOREIGN PATENTS 683,357 France Feb. 20, 1928 978,763 France Nov. 29, 1950 

1. SUCTION PUMP MEANS COMPRISING A FLOW TUBE OF THE STRAIGHT LINE WALL TYPE, A FLAT BODY MIDWAY IN THE FLOW TUBE FACING THE TUBE WALL, AND OPPOSITE, OPEN-ENDED SUCTION TUBES WITH SLANTED INNER ENDS EXTENDING PARTLY ACROSS THE FLOW TUBE TOWARD OPPOSITE SIDES OF SAID FLAT BODY AND TERMINATING IN SPACED RELATION THERETO, THE UPSTREAM SIDES OF THE SUCTION TUBES AS RELATED TO FLOW PASSAGE THROUGH THE FLOW TUBE EXTENDING FURTHER INTO THE FLOW TUBE THAN THE DOWNSTREAM SIDES. 